Revenue (Details) - USD ($) $ in Millions	3 Months Ended	9 Months Ended
	Mar. 30, 2019	Mar. 30, 2019	Jun. 30, 2018
Disaggregation of Revenue [Line Items]
Contract asset	$ 3.9	$ 3.9	$ 1.3
Change in Contract with Customer, Liability (Roll Forward)
Balance at beginning of period	71.0	71.9
Deferral of revenue billed in the current period, net of recognition	27.8	83.8
Revenue recognized during the period	(24.9)	(81.8)
Balance at end of period	73.9	73.9
Short-term deferred revenue	61.3	61.3	60.6
Long-term deferred revenue	$ 12.6	$ 12.6	$ 11.3
Minimum
Disaggregation of Revenue [Line Items]
Payment period from invoice date		30 days
Maximum
Disaggregation of Revenue [Line Items]
Payment period from invoice date		90 days